Electric heating unit for attachment to an automotive oil filter



FIG. 1 is a front elevational view of an electric heating unit for attachment to an automotive oil filter, showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a left side elevational view thereof, the right side being substantially similar in appearance.

The cross-hatch shading on the tubular elements is intended to represent conventional flexible electric cable and is understood to cover the entire area indicated. 

The ornamental design for an electric heating unit for attachment to an automotive oil filter, as shown and described. 